Musnad Abu Ya'la al-Mawsili 160:72

Hashim ibn al-Harith narrated to us, Muhammad ibn Rabi'ah al-Kufi narrated to us, from Yahya ibn al-'Ala' al-Razi, from al-'Ala' ibn 'Abd al-Rahman, from his father, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) cursed the *musawwifah* and the *mufassilah*. As for the *musawwifah*, she is the one who, when her husband desires her, says: "Soon, now." As for the *mufassilah*, she is the one who, when her husband desires her, says: "I am menstruating," while she is not menstruating.